a seven-inch phonograph record played at 45 r.p.m., especially a popular-music single.
She’s in the market for a phonograph so she can play her grandfather’s mint collection of 45s from the 1960s.
an identifier of or nickname for Donald Trump, the 45th U.S. president, alternately used with disparaging intent by opponents and with affection by supporters.
First recorded in 1945–50
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Spivey's .45 caliber, like most firearms, ejects casingsbehind and to the right.
From The Wall Street Journal • Dec. 21, 2025
Hours later he would come ashore with a .45 pistol, pencils, and a sketchbook.
From Slate • Jun. 6, 2025
Hutchins, according to the actor, told him to pull his Colt .45 revolver from his holster and point it at the camera for an extreme close-up view.
From Los Angeles Times • May 17, 2024
The 65-year-old actor was practicing firing a Colt .45 pistol before filming a scene for Rust, a forthcoming Western filmed near Santa Fe, New Mexico, in October 2021.
From BBC • Mar. 15, 2024
He found a box of .45 ACP cartridges and three boxes of .30-30 rifle shells.
From "The Road" by Cormac McCarthy
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
